Apparatus for renewing files.



N0. 792,822. PATENTED JUNE 20, 1905. T. S. HAMILTON.

APPARATUS FOR RENEWING FILES.

APPLICATION FILED FEB.16,1905.

2 SHEETS-SHEET l.

WITNESSES; lNr zmro/e.

. Giza/M No. 792,822. PATENTED JUNE 20, 1905.

T. s. HAMILTON.

APPARATUS FOR RENEWING FILES APPLICATION FILEDFEB.16,1905,

2 SHEETS-SHEET 2.

ATTORNEY 5.

UNITED STATES l atented June so, 1905.

PATENT OFFICE.

THOMAS S. HAMILTON, OF COLLINWOOD, OHIO, ASSIGNOR OF ONE- THIRD TO C. M. COLE AND ONE-THIRD TO CHARLES C. CLARK,

OF CLEVELAND, OHIO.

SPECIFICATION forming part of Letters Patent No. 792,822, dated June 20, 1905. Application filed February 16, 1905- Serial No. 245,844.

To all whom, it may concern:

Be itknown that I, THoMAs S. HAMILTON, residing at Oollinwood, in the county of Guyahoga and State of Ohio, have invented a certain new and useful Improvement in Apparatus for Renewing Files, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to improvements in apparatus for renewing files, and has for its object to provide means whereby files may be effectively and economically renewed by directing against the same a jet of a mixture of 'abrading material reduced to a finely-divided condition; to provide means whereby the material used for such renewing may be convenat right angles to Fig. 1.

iently collected, may be kept in condition for use, and used again continuously; to provide a convenient means for inserting and retaining the files in place during such renewing operation; to provide a simple and effective construction whereby the steam or other pres sure fluid which is used for impelling the mixture against the files may escape without access to the atmosphere in the room or place where the apparatus is situated, thereby preventing the finely-divided particles ofmaterial of such blast from injuring the health of the operator; to provide a convenient means for utilizing the steam which impels the abrading material for drying the files.

Generally speaking, the invention may be defined as consisting of the combinations of elements particularly set forth in the claims hereto annexed.

Referring to the drawings, Figure 1 represents a view, partly in elevation and partly in central longitudinal section, of an apparatus constructed in accordance with my invention. Fig. 2 represents a longitudinal sectional view of the lower portion of my apparatus, taken Fig. 3 represents a transverse sectional view of my apparatus, taken on the line 3 3 of Fig. 1. Fig. 4 represents a perspective detail view of the slide through which files are inserted into the casing, and Fig. 5 represents a sectional detail View of a form of siphon or injecting-nozzle which may be applied to my apparatus.

In the drawings, 1 represents a sheet-metal casing, preferably cylindrical in form, the said casing being provided with a frusto-conical hood 2, having a flue 3 attached thereto for the escape of the steam and the finely-divided particles carried thereby. Secured to the interior of said casing in any suitable manner about midway of the height thereof is the frusto-conical collector or funnel 4:, said funnel having-a depending neck 5.

Opposite the neck of the funnel the casing is provided with a door 6, whereby access may be had to the interior of said casing and for the insertion and removal therefrom of the receptacle or bucket 7. This receptacle or bucket is of suflicient size to embrace the neck 5 of the funnel, with a space therebetween, and is provided with eyes 8 for suspension from the funnel by the hooks 9. The bottom 10 of the receptacle or bucket 7 is conical, as shown.

A pipe 11 for pressure fluid, preferably steam, having a valve 12 therein, projects through the casing above the point of attachment thereto of the funnel 4:. The inner end of this pipe is contracted to form a nozzle 13, (see Fig. 5,) fitting into a T 14, to the forward end of which is attached a discharge-nozzle 15. A pipe 16, which extends down into the funnel and nearly to the lowest point of the conical bottom 10 of the bucket, connects with said T and is provided with a valve 17. It will be apparent from the construction and arrangement of parts that the siphon or injector will operate to withdraw the mixture from the bucket or receptacle? and inject the same into the casing.

The siphon is preferably arranged to discharge its blast horizontally across the casing. Directly opposite the nozzle 15 a metal plate 18 is secured to the casing to protect the same from the blast during the intervals when the file is out of the path of the blast. As will appear more particularly from Fig. 3, the protecting-plate 18 is concave in cross-section, the concavity of such plate being greater than that of the casing, whereby the abrading or cutting mixture discharged from said plate is prevented from impinging against the inte rior of the casing, is directed to the central portion of the casing, and drops quickly into the funnel 4:. Above the funnel the casing is provided with a sliding door 19, whereby access may be had to the funnel and the other parts within the casing, as well as for the insertion of the abrading material. The valve 17 is provided with a cranked operating-arm 20, journaled in and extending through the casing.

Directly above the nozzle the casing is provided with an opening 21 for the insertion of the file 22.- On each side of said opening and extending above the same are the guides 23.

These guides, as shown, may consist of-brackets bent from metal straps and having feet 24 for attachment to the casing. These brackets are substantially U-shaped, and the vertical members 25 thereof are provided with guides 26 for the reception of the slide 27. This slide is a plate having an inverted V-shaped slot 28 at the lower end thereofi The lower ends of the legs 29 are bent to form stops 30, which, engaging the lower ends of the members 25, prevent the withdrawal of the slide from its guides by operating the handle 31. The center of the inverted V 28 is directly above the nozzle 15, but to the rear of the discharge end of said nozzle, thus forming convenient means for maintaining the file in position to be operated upon by the blast, as well as preventing the blast from driving the file away from the nozzle. The opening 21 is located mainly above the slot 28 in the slide, thereby preventing to a great extent the escape of the steam and any fine particles therein through the opening 21. i

As I preferably employ steam in the siphon or injector of my apparatus, I utilize the hood of such apparatus to dry the files after resharpening. To this end I provide the top of the casing 1 with a flange 32, projecting a short distance above the junction of the hood 2 therewith, and provide such flange with notches or serrations 33 for the reception of the shanks of the files 22. The sloping surface of the hood 2 guides the steam upwardly to the flue 3 and provides an efiective drying surface for the files 22, while the serrations 33 receive the shanks of said files to prevent them from sliding off from the inclined surface of the head and permit the entire length of the bodies of the files to bear against such surface.

In operation the steam passing through the pipe 11 siphons from the conical bottom of the receptacle or bucket? the abrading material and discharges the same against the file, which has been inserted through the opening 21 and the V-shaped slot 28 in the slide 27.

When the file has been removed after it has been resharpened, the blast isdi-rectedagainst the target or protecting-plate l8, whence it is deflected away from the Wall of the casing and is discharged into the funnel 4:. By means of the door 6 the receptacle 7 may be removed and another may be substituted therefor.

The provision of the removable bucket or receptacle 7 is of peculiar advantage in the operation of the apparatus. The pail is only partially filled with the abrading material. As the steam condenses, the water of condensation, together with the mixture that has been expelled from the siphon, collects in the neck 5 and filters through the mixture into the annular space between the neck and the receptacle, the liquid standing at the same level in such space and in the neck. Should the water collect in sufiicient quantity to fill the neck, an overflow will be provided over the edge of the bucket. Should the quantity of abrading material in the pail become so reduced as to render it unfit foruse, the bucket may be readily removed and another one substituted therefor having therein a quantity of the wet mixture of proper consistency.

While I have necessarily described my invention in detail, it will be evident that such details may be departed from more or less without avoiding the spirit of my invention, and I do not propose to be limited to such details except as the same may be positively included in the claims hereto annexed or may be rendered necessary by the prior state of the art.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an apparatus of the character described, the combination of a casing having an opening therein for the insertion of files, an injector or siphon adjacent said opening for directing abrading material against the files, a collecting-funnel below said siphon having a downwardly-extending neck, a receptacle or bucket surrounding said neck and sufiiciently larger than said neck to provide a space therebetween, and a pipe extending fromthe bottom of said receptacle to the siphon or injec tor, substantially as specified.

2. In an apparatus of the character described, the combination ofa casing having an opening therein for the insertion of files, a siphon or injector adjacent said opening for directing abrading material against the files, a collecting-funnel below said siphon having a downwardly-extending neck, a receptacle or bucket removably fitting and surrounding said neck and having a conical bottom, and a pipe extending from a point above the lowestportion of said conical bottom to the siphon or injector, substantially as specified.

3. In an apparatus of the character described, the combination of a cylindrical cas ing, a siphon or injector within said casing and directed toward the inner wall thereof, and a concave metal protecting plate or target secured to the inner wall of said casing opposite %ai1 siphon or injector, substantially as speci- 4:. In an apparatus of the character described, the combination of a cylindrical casing, a siphon or injector positioned to discharge toward the inner wall of the casing, a concave protecting plate or target secured to the inner wall of said casing opposite said siphon or injector, the concavity of said plate being greater than that of the casing, and

means for collecting the material injected by said siphon, substantially as specified.

5. In an apparatus of the character described, the combination of a casing having an opening therein for the insertion of files, a siphon or injector in said casing adjacent said opening, a slide having an inverted-V-shaped slot therein, the center of said slot being in alinement with said nozzle, and guides for said slide, substantially as specified.

6. In an apparatus of the character described, the combination of a casing having an opening therein for the insertion of files, a siphon or injector in alinement with said opening, and an adjustable slide in alinement with said siphon or injector and having centering means adapted for difl'erent-sized files, substantially as specified.

7. In an apparatus of the character described, the combination of a casing having an opening therein for the insertion of files, an injector or siphon adjacent said opening, a slide having centering means therein in alinement with the longitudinal axis of said siphon or injector, said slide being interposed between the discharge end of said siphon or injecgor and said opening, substantially as specifie 8. In an apparatus of the character described, the combination of a casing having an opening therein for the insertion of files, a siphon or injector adjacent said opening, a slide mounted in said guides and provided with means for centering the files with reference to said siphon or injector, means for operating said slide, and projections carried by said slide to prevent the withdrawal of the siarie from its guides, substantially as speci- In testimony whereof I afiix my signature in the presence of two witnesses.

, .THOMAS S. HAMILTON.

Witnesses:

CHAS. (J. CLARK, J. B. HULL. 

